Latitude, sun exposure and vitamin D supplementation: associations with quality of life and disease outcomes in a large international cohort of people with multiple sclerosis.
Jelinek GA, Marck CH, Weiland TJ, Pereira N, van der Meer DM, Hadgkiss EJ
BMC Neurol. 2015; 15:132. Epub 2015 Aug 05. PMID: 26243188.Abstract